What's New?

Is it New Bike Time? Always!
07/12/19- Don't waste another nice day on impulse power when you could be riding at Warp 9. Chain Reaction features the very best bikes from Trek & Electra, as well as the highest-quality travel bikes from Bike Friday. Road, Mountain, Hybrid, Electric assist, Kids... we've got them all. Probably the best selection in a single location you'll find anywhere on the peninsula too.
Got a bike that needs repairs?
If you purchased your bike from us, remember that you can bring it in anytime, without calling ahead, for minor on-the-spot adjustments of brakes, gears and wheels (at no charge; this is included with any bike purchased from us). For flat tires, again, no appointment needed. Where possible we try and do flat tires while you wait, but there will be times that's not possible. At most you will be leaving your bike overnight.

For normal (bigger) repairs, our backlog has become so bad that, for the remainder of July, we can no longer take in major work. It is literally a "no room at the inn" situation. This could be the case at many shops known for high-quality service. Not helping matters has been the demise of several local bike shops (the most recent of which is Talbots Cyclery in San Mateo, and several Performance stores), which adds to the strain the remaining shops are feeling.
It's E-Bike time at Chain Reaction! E-Bikes are the latest thing; find out why! Commute to the office without needing a shower, bring home the groceries (even if you live on top of a hill!) or keep up with your obsessive-cyclist partner. Prices start at just $1299 (Oyama folding E-bike) up to the incredible Trek Super Commuter 8 at $5199. They're not a secret anymore; everyone seems to have one. Find out why!

Disc Brakes for Road Bikes- Making the right choice

Disc brakes are the latest thing for road bikes. But are they the right choice for you? We discuss the trade-offs including benefits, cost, added weight and maintenance requirements.

Just a few of the bikes we sell. One of them is just right for you!

Bike Friday Pocket Companion (original)
$799.99 $890.00 10% Savings
The original version of the Pocket Companion, available in three sizes (the...
Trek Checkpoint AL 4
$1,469.99 - $1,539.99 $1,539.99 Up To 5% Savings
Checkpoint AL 4 is an ideal entry point to the world of gravel riding. It's...
Trek Marlin 7
$729.99 - $789.99 $779.99 - $789.99 Up To 8% Savings
Marlin 7 is where race-worthy mountain bikes begin. The smooth, lightweight...
Trek District SSB
$799.99 $879.99 9% Savings
Forget the car, idling in traffic, high parking fees and soaring gas prices...
Trek Dual Sport 1 Women's
$499.99 - $549.99 $539.99 - $549.99 Up To 9% Savings
Dual Sport 1 Women's is a hybrid bike in the true sense of the term: it exc...
Trek FX Sport 5
$1,599.99 - $1,799.99 $1,889.99 Up To 15% Savings
FX Sport 5 is a carbon fiber fitness bike for riders who want the speed of ...
Trek Domane SL 7 Women's
$3,999.99 $4,999.99 20% Savings
Key features - Front and Rear IsoSpeed decouplers smooth rough roads - ...
Trek Domane SL 6 Disc
$3,499.99 - $3,779.99 $3,779.99 Up To 7% Savings
Domane SL 6 Disc is a performance road bike that's both fast and comfortabl...
Trek Roscoe 7
$999.99 - $1,149.99 $1,199.99 Up To 17% Savings
Roscoe 7 is a mid-fat trail hardtail for riders who favor a fun and lively ...
Electra Townie Go! 8i
$2,299.99 $2,299.99 - $2,729.99 16% Savings
Power when you need. Pedals when you don’t. Townie® Go! is a battery-powere...
Trek Domane SL 5 Women's
$1,999.99 - $2,299.99 $2,299.99 Up To 13% Savings
Domane SL 5 Women's is all about smooth riding, speed, and efficiency. It's...
Trek Conduit+
$1,999.99 $2,999.99 33% Savings
Partake in all the joys of riding a bike without breaking a sweat or ever g...